<!DOCTYPE html>
<html lang="en-US">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width,initial-scale=1" />
    <title>React16_4整理-开篇 | aiyoudiao</title>
    <meta name="generator" content="VuePress 1.9.10" />
    <link rel="icon" href="/img/blog.ico">
    <script src="https://cdn.jsdelivr.net/npm/live2d-widget@3.1.4/lib/L2Dwidget.min.js"></script> <meta name="description" content="码二~">
    <meta name="keywords" content="前端博客,个人技术博客,前端,前端开发,前端框架,web前端,前端面试题,技术文档,学习,面试,JavaScript,js,ES6,TypeScript,vue,python,css3,html5,Node,git,github,gitee,markdown">
    <meta name="theme-color" content="#11a8cd">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"> <link rel="preload" href="/assets/css/0.styles.146197cf.css" as="style"><link rel="preload" href="/assets/js/app.bd2fbc77.js" as="script"><link rel="preload" href="/assets/js/3.72c9c947.js" as="script"><link rel="preload" href="/assets/js/110.0b0ee5b4.js" as="script"><link rel="preload" href="/assets/js/42.4251ca36.js" as="script"><link rel="prefetch" href="/assets/js/1.4ed4671d.js"><link rel="prefetch" href="/assets/js/10.bd6ddb58.js"><link rel="prefetch" href="/assets/js/100.20d2348f.js"><link rel="prefetch" href="/assets/js/101.ba7b784c.js"><link rel="prefetch" href="/assets/js/102.c3e2dcae.js"><link rel="prefetch" href="/assets/js/103.0f4c50f3.js"><link rel="prefetch" href="/assets/js/104.ef47a111.js"><link rel="prefetch" href="/assets/js/105.2e00f516.js"><link rel="prefetch" href="/assets/js/106.b50e19b9.js"><link rel="prefetch" href="/assets/js/107.e125a8f6.js"><link rel="prefetch" href="/assets/js/108.770493ab.js"><link rel="prefetch" href="/assets/js/109.74766d7b.js"><link rel="prefetch" href="/assets/js/11.f786a5ee.js"><link rel="prefetch" href="/assets/js/111.835b0e44.js"><link rel="prefetch" href="/assets/js/112.352fa217.js"><link rel="prefetch" href="/assets/js/113.4e908557.js"><link rel="prefetch" href="/assets/js/114.7b77996d.js"><link rel="prefetch" href="/assets/js/115.bdc61268.js"><link rel="prefetch" href="/assets/js/116.d5da9b8b.js"><link rel="prefetch" href="/assets/js/117.35ab1f9f.js"><link rel="prefetch" href="/assets/js/118.517c151d.js"><link rel="prefetch" href="/assets/js/119.f7f49ba8.js"><link rel="prefetch" href="/assets/js/12.3c729a65.js"><link rel="prefetch" href="/assets/js/120.b559598b.js"><link rel="prefetch" href="/assets/js/121.bf8a2f43.js"><link rel="prefetch" href="/assets/js/122.11a0bc97.js"><link rel="prefetch" href="/assets/js/123.2bafdde7.js"><link rel="prefetch" href="/assets/js/124.dc393688.js"><link rel="prefetch" href="/assets/js/125.ed3f389a.js"><link rel="prefetch" href="/assets/js/126.8fd9a57d.js"><link rel="prefetch" href="/assets/js/127.3bf2a1f2.js"><link rel="prefetch" href="/assets/js/128.b9c671d3.js"><link rel="prefetch" href="/assets/js/129.5d331f0d.js"><link rel="prefetch" href="/assets/js/13.7b1a1fe5.js"><link rel="prefetch" href="/assets/js/130.53e4f9c6.js"><link rel="prefetch" href="/assets/js/131.dcc47e1d.js"><link rel="prefetch" href="/assets/js/132.692dcdcd.js"><link rel="prefetch" href="/assets/js/133.e293202c.js"><link rel="prefetch" href="/assets/js/134.593dccf2.js"><link rel="prefetch" href="/assets/js/135.d76d384b.js"><link rel="prefetch" href="/assets/js/136.a519c23c.js"><link rel="prefetch" href="/assets/js/137.b1821288.js"><link rel="prefetch" href="/assets/js/138.5bcea4ef.js"><link rel="prefetch" href="/assets/js/139.076664b0.js"><link rel="prefetch" href="/assets/js/14.35f257b2.js"><link rel="prefetch" href="/assets/js/140.a019e655.js"><link rel="prefetch" href="/assets/js/141.1f70e1c7.js"><link rel="prefetch" href="/assets/js/142.5ed728fd.js"><link rel="prefetch" href="/assets/js/143.1c8cdc78.js"><link rel="prefetch" href="/assets/js/144.b0cb125b.js"><link rel="prefetch" href="/assets/js/145.c0209a76.js"><link rel="prefetch" href="/assets/js/146.551469f4.js"><link rel="prefetch" href="/assets/js/147.1dfd721d.js"><link rel="prefetch" href="/assets/js/148.91d07ef5.js"><link rel="prefetch" href="/assets/js/149.5b88b710.js"><link rel="prefetch" href="/assets/js/15.23bbc29a.js"><link rel="prefetch" href="/assets/js/150.8301107f.js"><link rel="prefetch" href="/assets/js/151.867da089.js"><link rel="prefetch" href="/assets/js/152.935d5046.js"><link rel="prefetch" href="/assets/js/153.f39d8435.js"><link rel="prefetch" href="/assets/js/154.6b9eb2c3.js"><link rel="prefetch" href="/assets/js/155.14283ad4.js"><link rel="prefetch" href="/assets/js/156.2d7c1a2a.js"><link rel="prefetch" href="/assets/js/157.2f28d02f.js"><link rel="prefetch" href="/assets/js/158.151221ae.js"><link rel="prefetch" href="/assets/js/159.ef6d7ffe.js"><link rel="prefetch" href="/assets/js/16.1793aef7.js"><link rel="prefetch" href="/assets/js/160.de54c4ea.js"><link rel="prefetch" href="/assets/js/161.24d4e57c.js"><link rel="prefetch" href="/assets/js/162.632032fe.js"><link rel="prefetch" href="/assets/js/163.fd01cd99.js"><link rel="prefetch" href="/assets/js/164.45f203f5.js"><link rel="prefetch" href="/assets/js/165.aafe4fe1.js"><link rel="prefetch" href="/assets/js/166.1dd1d21c.js"><link rel="prefetch" href="/assets/js/167.5501b3a1.js"><link rel="prefetch" href="/assets/js/168.fbe58b1f.js"><link rel="prefetch" href="/assets/js/169.2cae7f5e.js"><link rel="prefetch" href="/assets/js/17.bbfe63f2.js"><link rel="prefetch" href="/assets/js/170.265f7c9e.js"><link rel="prefetch" href="/assets/js/171.b61f327d.js"><link rel="prefetch" href="/assets/js/172.5d0043fd.js"><link rel="prefetch" href="/assets/js/173.45284bb6.js"><link rel="prefetch" href="/assets/js/174.9130e0c4.js"><link rel="prefetch" href="/assets/js/175.2b38bddd.js"><link rel="prefetch" href="/assets/js/176.9772cf09.js"><link rel="prefetch" href="/assets/js/177.69048ebc.js"><link rel="prefetch" href="/assets/js/178.e10d7ce5.js"><link rel="prefetch" href="/assets/js/179.3789edc0.js"><link rel="prefetch" href="/assets/js/18.0807ded0.js"><link rel="prefetch" href="/assets/js/180.ab675e47.js"><link rel="prefetch" href="/assets/js/181.2e39eff0.js"><link rel="prefetch" href="/assets/js/19.becf5a76.js"><link rel="prefetch" href="/assets/js/2.eb089a4f.js"><link rel="prefetch" href="/assets/js/20.cea59652.js"><link rel="prefetch" href="/assets/js/21.58c43ff1.js"><link rel="prefetch" href="/assets/js/22.f73b825d.js"><link rel="prefetch" href="/assets/js/23.43b13730.js"><link rel="prefetch" href="/assets/js/24.f77f93ca.js"><link rel="prefetch" href="/assets/js/25.7dfaf3fb.js"><link rel="prefetch" href="/assets/js/26.629d28e5.js"><link rel="prefetch" href="/assets/js/27.4fff23ea.js"><link rel="prefetch" href="/assets/js/28.1b8ae389.js"><link rel="prefetch" href="/assets/js/29.d5cce9a0.js"><link rel="prefetch" href="/assets/js/30.961d5519.js"><link rel="prefetch" href="/assets/js/31.121dd1af.js"><link rel="prefetch" href="/assets/js/32.4a3c5df7.js"><link rel="prefetch" href="/assets/js/33.5537f44b.js"><link rel="prefetch" href="/assets/js/34.1d4d4653.js"><link rel="prefetch" href="/assets/js/35.d094209b.js"><link rel="prefetch" href="/assets/js/36.832660c5.js"><link rel="prefetch" href="/assets/js/37.145c3665.js"><link rel="prefetch" href="/assets/js/38.4f369bfe.js"><link rel="prefetch" href="/assets/js/39.ba060044.js"><link rel="prefetch" href="/assets/js/4.66d742f6.js"><link rel="prefetch" href="/assets/js/40.e50e0379.js"><link rel="prefetch" href="/assets/js/41.4ed7617c.js"><link rel="prefetch" href="/assets/js/43.d22b74c4.js"><link rel="prefetch" href="/assets/js/44.59439f9d.js"><link rel="prefetch" href="/assets/js/45.da28bc46.js"><link rel="prefetch" href="/assets/js/46.b8db1176.js"><link rel="prefetch" href="/assets/js/47.7ed16fc7.js"><link rel="prefetch" href="/assets/js/48.c982d5ed.js"><link rel="prefetch" href="/assets/js/49.a7579f55.js"><link rel="prefetch" href="/assets/js/5.08802d7d.js"><link rel="prefetch" href="/assets/js/50.103b5bf6.js"><link rel="prefetch" href="/assets/js/51.0fe9d79a.js"><link rel="prefetch" href="/assets/js/52.9ba31e26.js"><link rel="prefetch" href="/assets/js/53.0e8bc1f0.js"><link rel="prefetch" href="/assets/js/54.9566e517.js"><link rel="prefetch" href="/assets/js/55.a124abae.js"><link rel="prefetch" href="/assets/js/56.d9cf0800.js"><link rel="prefetch" href="/assets/js/57.93599da0.js"><link rel="prefetch" href="/assets/js/58.d943f85b.js"><link rel="prefetch" href="/assets/js/59.50a66488.js"><link rel="prefetch" href="/assets/js/6.a3ea60eb.js"><link rel="prefetch" href="/assets/js/60.21aa3aa3.js"><link rel="prefetch" href="/assets/js/61.6712c00f.js"><link rel="prefetch" href="/assets/js/62.eff3e4b1.js"><link rel="prefetch" href="/assets/js/63.09701d5a.js"><link rel="prefetch" href="/assets/js/64.eb440dec.js"><link rel="prefetch" href="/assets/js/65.aeed0579.js"><link rel="prefetch" href="/assets/js/66.97244c64.js"><link rel="prefetch" href="/assets/js/67.e01c5c24.js"><link rel="prefetch" href="/assets/js/68.21be91ba.js"><link rel="prefetch" href="/assets/js/69.c0849905.js"><link rel="prefetch" href="/assets/js/7.7fd40e91.js"><link rel="prefetch" href="/assets/js/70.b32bbe5d.js"><link rel="prefetch" href="/assets/js/71.0efbc0c7.js"><link rel="prefetch" href="/assets/js/72.ef963181.js"><link rel="prefetch" href="/assets/js/73.ca7dd5db.js"><link rel="prefetch" href="/assets/js/74.4483ede8.js"><link rel="prefetch" href="/assets/js/75.374ab483.js"><link rel="prefetch" href="/assets/js/76.b4a39f08.js"><link rel="prefetch" href="/assets/js/77.6b30c3cd.js"><link rel="prefetch" href="/assets/js/78.15376c33.js"><link rel="prefetch" href="/assets/js/79.3153fcec.js"><link rel="prefetch" href="/assets/js/80.9a88c684.js"><link rel="prefetch" href="/assets/js/81.1e3f842c.js"><link rel="prefetch" href="/assets/js/82.996dbd3d.js"><link rel="prefetch" href="/assets/js/83.955158bf.js"><link rel="prefetch" href="/assets/js/84.71bdc76d.js"><link rel="prefetch" href="/assets/js/85.774e49f2.js"><link rel="prefetch" href="/assets/js/86.bebf32e5.js"><link rel="prefetch" href="/assets/js/87.becdbde1.js"><link rel="prefetch" href="/assets/js/88.49e933f4.js"><link rel="prefetch" href="/assets/js/89.eeceedfd.js"><link rel="prefetch" href="/assets/js/90.3ea6dd12.js"><link rel="prefetch" href="/assets/js/91.62a6a556.js"><link rel="prefetch" href="/assets/js/92.e2ebb8f5.js"><link rel="prefetch" href="/assets/js/93.dcdefe7a.js"><link rel="prefetch" href="/assets/js/94.bf412146.js"><link rel="prefetch" href="/assets/js/95.8deadcdc.js"><link rel="prefetch" href="/assets/js/96.9977087a.js"><link rel="prefetch" href="/assets/js/97.6591f9da.js"><link rel="prefetch" href="/assets/js/98.4db7f75e.js"><link rel="prefetch" href="/assets/js/99.a61462e9.js"><link rel="prefetch" href="/assets/js/vendors~docsearch.2852b102.js"> <link rel="stylesheet" href="/assets/css/0.styles.146197cf.css">
  </head>
  <body class="theme-mode-light">
    <div id="app" data-server-rendered="true"><div class="theme-container sidebar-open have-rightmenu"><header class="navbar blur"><div title="目录" class="sidebar-button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" role="img" viewBox="0 0 448 512" width="50" height="50" class="icon"><path fill="currentColor" d="M436 124H12c-6.627 0-12-5.373-12-12V80c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12z"></path></svg></div> <a href="/" class="home-link router-link-active"><img src="https://p3-passport.byteacctimg.com/img/user-avatar/794fdae4ff249d532da19a3c26d420ed~300x300.image" alt="aiyoudiao" class="logo"> <span class="site-name can-hide">
      aiyoudiao
    </span></a> <div class="links"><div class="sky-switch" data-v-3a03d589><label for="toggle" data-v-3a03d589><input id="toggle" type="checkbox" data-v-3a03d589><div data-v-3a03d589></div></label></div> <div class="search-box"><input aria-label="Search" autocomplete="off" spellcheck="false" value=""> <!----></div> <nav class="nav-links can-hide"><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="笔记" class="dropdown-title"><!----> <span class="title" style="display:;">笔记</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/84633490449/" class="nav-link">
  JavaScript
</a></li><li class="dropdown-item"><!----> <a href="/pages/2331001041/" class="nav-link">
  Vue
</a></li><li class="dropdown-item"><!----> <a href="/pages/18114480448/" aria-current="page" class="nav-link router-link-exact-active router-link-active">
  React
</a></li><li class="dropdown-item"><!----> <a href="/pages/25236260426/" class="nav-link">
  低代码
</a></li><li class="dropdown-item"><!----> <a href="/pages/35345230523/" class="nav-link">
  线性系统
</a></li><li class="dropdown-item"><!----> <a href="/pages/08313561056/" class="nav-link">
  暂未分类
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="算法与设计" class="dropdown-title"><!----> <span class="title" style="display:;">算法与设计</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/70741550255/" class="nav-link">
  LeetCode
</a></li><li class="dropdown-item"><!----> <a href="/pages/17845450445/" class="nav-link">
  算法
</a></li><li class="dropdown-item"><!----> <a href="/pages/90132170217/" class="nav-link">
  数据结构
</a></li><li class="dropdown-item"><!----> <a href="/pages/50546120212/" class="nav-link">
  设计模式
</a></li><li class="dropdown-item"><!----> <a href="/pages/02344550255/" class="nav-link">
  Other
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="技能" class="dropdown-title"><!----> <span class="title" style="display:;">技能</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/82158160216/" class="nav-link">
  PMP
</a></li><li class="dropdown-item"><!----> <a href="/pages/41858590259/" class="nav-link">
  Office
</a></li><li class="dropdown-item"><!----> <a href="/pages/02359360236/" class="nav-link">
  面试
</a></li><li class="dropdown-item"><!----> <a href="/pages/73600130213/" class="nav-link">
  Bash
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="历程" class="dropdown-title"><!----> <span class="title" style="display:;">历程</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/83857320232/" class="nav-link">
  流年往事
</a></li><li class="dropdown-item"><!----> <a href="/pages/93419130213/" class="nav-link">
  经验片段
</a></li><li class="dropdown-item"><!----> <a href="/pages/99744220322/" class="nav-link">
  读书杂感
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="首页" class="dropdown-title"><!----> <span class="title" style="display:;">首页</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/archives/" class="nav-link">
  归档
</a></li><li class="dropdown-item"><!----> <a href="/categories/" class="nav-link">
  分类
</a></li><li class="dropdown-item"><!----> <a href="/tags/" class="nav-link">
  标签
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="其它" class="dropdown-title"><!----> <span class="title" style="display:;">其它</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/02657130213/" class="nav-link">
  简介
</a></li><li class="dropdown-item"><!----> <a href="/pages/5390102042/" class="nav-link">
  收藏
</a></li><li class="dropdown-item"><!----> <a href="/pages/32309510451/" class="nav-link">
  有趣
</a></li><li class="dropdown-item"><!----> <a href="/pages/23313210521/" class="nav-link">
  文档
</a></li></ul></div></div> <!----></nav></div></header> <div class="sidebar-mask"></div> <div class="sidebar-hover-trigger"></div> <aside class="sidebar" style="display:none;"><div class="blogger"><img src="/img/mar.jpg"> <div class="blogger-info"><h3>码二</h3> <span>扫微信二维码，认识一下码二吧😉。</span></div></div> <nav class="nav-links"><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="笔记" class="dropdown-title"><!----> <span class="title" style="display:;">笔记</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/84633490449/" class="nav-link">
  JavaScript
</a></li><li class="dropdown-item"><!----> <a href="/pages/2331001041/" class="nav-link">
  Vue
</a></li><li class="dropdown-item"><!----> <a href="/pages/18114480448/" aria-current="page" class="nav-link router-link-exact-active router-link-active">
  React
</a></li><li class="dropdown-item"><!----> <a href="/pages/25236260426/" class="nav-link">
  低代码
</a></li><li class="dropdown-item"><!----> <a href="/pages/35345230523/" class="nav-link">
  线性系统
</a></li><li class="dropdown-item"><!----> <a href="/pages/08313561056/" class="nav-link">
  暂未分类
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="算法与设计" class="dropdown-title"><!----> <span class="title" style="display:;">算法与设计</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/70741550255/" class="nav-link">
  LeetCode
</a></li><li class="dropdown-item"><!----> <a href="/pages/17845450445/" class="nav-link">
  算法
</a></li><li class="dropdown-item"><!----> <a href="/pages/90132170217/" class="nav-link">
  数据结构
</a></li><li class="dropdown-item"><!----> <a href="/pages/50546120212/" class="nav-link">
  设计模式
</a></li><li class="dropdown-item"><!----> <a href="/pages/02344550255/" class="nav-link">
  Other
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="技能" class="dropdown-title"><!----> <span class="title" style="display:;">技能</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/82158160216/" class="nav-link">
  PMP
</a></li><li class="dropdown-item"><!----> <a href="/pages/41858590259/" class="nav-link">
  Office
</a></li><li class="dropdown-item"><!----> <a href="/pages/02359360236/" class="nav-link">
  面试
</a></li><li class="dropdown-item"><!----> <a href="/pages/73600130213/" class="nav-link">
  Bash
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="历程" class="dropdown-title"><!----> <span class="title" style="display:;">历程</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/83857320232/" class="nav-link">
  流年往事
</a></li><li class="dropdown-item"><!----> <a href="/pages/93419130213/" class="nav-link">
  经验片段
</a></li><li class="dropdown-item"><!----> <a href="/pages/99744220322/" class="nav-link">
  读书杂感
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="首页" class="dropdown-title"><!----> <span class="title" style="display:;">首页</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/archives/" class="nav-link">
  归档
</a></li><li class="dropdown-item"><!----> <a href="/categories/" class="nav-link">
  分类
</a></li><li class="dropdown-item"><!----> <a href="/tags/" class="nav-link">
  标签
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="其它" class="dropdown-title"><!----> <span class="title" style="display:;">其它</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/pages/02657130213/" class="nav-link">
  简介
</a></li><li class="dropdown-item"><!----> <a href="/pages/5390102042/" class="nav-link">
  收藏
</a></li><li class="dropdown-item"><!----> <a href="/pages/32309510451/" class="nav-link">
  有趣
</a></li><li class="dropdown-item"><!----> <a href="/pages/23313210521/" class="nav-link">
  文档
</a></li></ul></div></div> <!----></nav>  <ul class="sidebar-links"><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>JavaScript</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>vue</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>react</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading open"><span>16_4</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/pages/18114480448/" aria-current="page" class="active sidebar-link">React16_4整理-开篇</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/pages/18114480448/#前言" class="sidebar-link">前言</a></li><li class="sidebar-sub-header"><a href="/pages/18114480448/#技术点" class="sidebar-link">技术点</a></li><li class="sidebar-sub-header"><a href="/pages/18114480448/#react-介绍" class="sidebar-link">React 介绍</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/pages/18114480448/#react-js-与-vue-js-对比" class="sidebar-link">React.js 与 Vue.js 对比</a></li><li class="sidebar-sub-header"><a href="/pages/18114480448/#react-组件" class="sidebar-link">React 组件</a></li><li class="sidebar-sub-header"><a href="/pages/18114480448/#react-jsx" class="sidebar-link">React JSX</a></li></ul></li><li class="sidebar-sub-header"><a href="/pages/18114480448/#环境搭建" class="sidebar-link">环境搭建</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/pages/18114480448/#简单介绍" class="sidebar-link">简单介绍</a></li><li class="sidebar-sub-header"><a href="/pages/18114480448/#工程介绍" class="sidebar-link">工程介绍</a></li><li class="sidebar-sub-header"><a href="/pages/18114480448/#public-文件夹" class="sidebar-link">public 文件夹</a></li><li class="sidebar-sub-header"><a href="/pages/18114480448/#src-文件夹" class="sidebar-link">src 文件夹</a></li></ul></li></ul></li><li><a href="/pages/78144320432/" class="sidebar-link">React16_4整理-TodoList</a></li><li><a href="/pages/7981309049/" class="sidebar-link">React16_4整理-上阶</a></li><li><a href="/pages/4241004044/" class="sidebar-link">React16_4整理-Redux开篇</a></li><li><a href="/pages/2765901041/" class="sidebar-link">React16_4整理-Redux上阶</a></li><li><a href="/pages/53933290429/" class="sidebar-link">React16_4整理-实战</a></li></ul></section></li><li><a href="/pages/2541802042/" class="sidebar-link">react心得</a></li><li><a href="/pages/56216400440/" class="sidebar-link">react设计的哲学</a></li><li><a href="/pages/64353330433/" class="sidebar-link">react上手知识点(上篇)</a></li><li><a href="/pages/67517390439/" class="sidebar-link">react上手知识点(下篇)</a></li><li><a href="/pages/21029430543/" class="sidebar-link">antd</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>低代码</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>读书会</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>线性代数</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>docker</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>auto</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>杂记</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <div><main class="page"> <div class="theme-vdoing-wrapper bg-style-1"><div class="articleInfo-wrap" data-v-18fb2c02><div class="articleInfo" data-v-18fb2c02><ul class="breadcrumbs" data-v-18fb2c02><li data-v-18fb2c02><a href="/" title="首页" class="iconfont icon-home router-link-active" data-v-18fb2c02></a></li> <li data-v-18fb2c02><a href="/categories/?category=%E7%AC%94%E8%AE%B0" title="分类" data-v-18fb2c02>
          笔记
        </a></li> <li data-v-18fb2c02><a href="/categories/?category=react" title="分类" data-v-18fb2c02>
          react
        </a></li> <li data-v-18fb2c02><a href="/categories/?category=16_4" title="分类" data-v-18fb2c02>16_4</a></li></ul> <div class="info" data-v-18fb2c02><div title="作者" class="author iconfont icon-touxiang" data-v-18fb2c02><a href="javascript:;" data-v-18fb2c02>aiyoudiao</a></div> <div title="创建时间" class="date iconfont icon-riqi" data-v-18fb2c02><a href="javascript:;" data-v-18fb2c02>2022-04-10</a></div> <!----></div></div></div> <!----> <div class="content-wrapper"><div class="right-menu-wrapper"><div class="right-menu-margin"><div class="right-menu-content"></div></div></div> <h1><!----> <span>
            React16_4整理-开篇
          </span></h1> <div class="theme-vdoing-content content__default"><h2 id="前言"><a href="#前言" class="header-anchor">#</a> 前言</h2> <p>这篇文章的笔记是在2018年学习React时整理的内容，虽然那时候没有hooks，但是还是决定整理出来，因为React class也是很经典的，后面可以再写几篇react hooks相关的react文章。</p> <h2 id="技术点"><a href="#技术点" class="header-anchor">#</a> 技术点</h2> <p>js<br>
ES6<br>
webpack<br>
npm</p> <hr> <p><code>create-react-app</code> 脚手架工具<br>
组件化思维<br>
JSX<br>
开发调试工具<br>
虚拟 DOM<br>
生命周期<br> <code>React-transition-group</code><br>
Redux<br>
Antd<br>
UI,容器组件<br>
无状态组件<br>
redux-thunk<br>
redux-saga<br>
Styled-components<br>
immutabel.js<br>
redux-immutable<br>
axios</p> <h2 id="react-介绍"><a href="#react-介绍" class="header-anchor">#</a> React 介绍</h2> <p>Facebook 推出<br>
2013 年开源<br>
函数式编程<br>
使用人数最多的前端框架<br>
健全的文档与完善的社区<br>
React Fiber</p> <p>React原来是php项目，后来改了编译器，换成js来编译，然后加入虚拟dom。所以React只做两件事，一件事是渲染ui，一件事是响应事件。<br>
mvc和mvvm都是早些年angular的设计理念。react并不是什么mvvm和mvc，它只是一个很小的东西，只做那两件事儿。它只是个工具。backbone才是真正的mvc，它是模仿java的spring，挪到前端来了。</p> <h3 id="react-js-与-vue-js-对比"><a href="#react-js-与-vue-js-对比" class="header-anchor">#</a> React.js 与 Vue.js 对比</h3> <p>React.js 灵活性更大一些<br>
React.js 处理一些复杂的方案时有更多一点的选择<br>
Vue.js 提供了更加丰富的 API 实现功能更简单<br>
Vue.js 的灵活性就有了一定的限制<br>
复杂度大的项目时倾向使用 React.js<br>
复杂度不是特别高的项目时用 vue.js 开发更爽一些</p> <h3 id="react-组件"><a href="#react-组件" class="header-anchor">#</a> React 组件</h3> <p>一个页面很难写，但是如果把他们拆分成一个个小组件就简单多了。<br> <code>import React, {Component} from 'react'</code>中的<code>Component</code> 等价于 <code>React.Component</code><br>
之所以要引入 <code>React</code>，因为 将 html 标签或者自定组件<code>生成虚拟dom</code>时要<code>用</code>到<code>React.createElemnt()</code>这个方法，所以你<code>不引</code>入就<code>会报错</code>。</p> <h3 id="react-jsx"><a href="#react-jsx" class="header-anchor">#</a> React JSX</h3> <p>在 react 中 JSX 语法可以直接写 html 标签，<code>不需要</code>你在 html 标签外面<code>加单、双引号</code><br>
jsx 中自定义组件无论是<code>函数式</code>还是<code>类语法糖式</code>，都要首字母大写，如果是小写就会不支持，因为<code>避免</code>和 html<code>原本</code>的<code>标签</code>起<code>冲突</code>。</p> <h2 id="环境搭建"><a href="#环境搭建" class="header-anchor">#</a> 环境搭建</h2> <h3 id="简单介绍"><a href="#简单介绍" class="header-anchor">#</a> 简单介绍</h3> <p><code>引入.js</code>来使用 React，这种方式<code>性能很低</code>，<code>不好维护</code>。<br>
通过脚手架工具来编码，一般通过<code>grunt、gulp、webpack</code>这样的工具来<code>编译</code>脚手架。<br>
官方脚手架工具：<code>Create-react-app</code><br>
使用 npm 命令：<code>npm install -g create-react-app</code> 安装这个脚手架工具<br>
使用命令<code>create-react-app my-app</code> 创建一个项目<br>
cd 进入 <code>my-app</code>目录 使用 <code>yarn start</code> 开一个服务后自动打开浏览器查看默认页面</p> <h3 id="工程介绍"><a href="#工程介绍" class="header-anchor">#</a> 工程介绍</h3> <p><code>npm run start</code> 和 <code>yarn start</code> 一样<br> <code>yarn.lock</code> 文件：项目文件的安装包以及一些限制（不要去动）。<br> <code>README.md</code> 文件：这是这个项目的说明文件。<br> <code>package.json</code>文件：这是项目的依赖包以及指令定义说明文件。<br> <code>.gitignore</code>文件：如果你进行代码管理的时候，不想把一些文件上传到仓库时，可以将那些文件及文件夹写到里面去。<br> <code>node_modules</code> 文件夹：存放一些第三方的包文件、一些第三方的模块儿。</p> <h3 id="public-文件夹"><a href="#public-文件夹" class="header-anchor">#</a> <code>public</code> 文件夹</h3> <p><code>favicon.ico</code> : 网站图标文件<br> <code>index.html</code>: 简单的模板文件，<code>&lt;noscript&gt;</code>当前网页禁用脚本<code>&lt;/noscript&gt;</code>标签标识页面如果禁用了脚本，就会显示脚本标签中的内容。<br> <code>manifest.json</code>: 配置 PWA 渐进式 web 应用的 清单内容，如定义 当在手机桌面时作为一个 app 快捷名称。如定义 当在手机桌面时作为一个 app 快捷图标的规格大小。如定义 当在手机桌面时作为一个 app 快捷图标的网址，定义主题颜色、背景颜色等等。<br>
首页会去引入这个文件 <code>&lt;link rel = &quot;manifest&quot; href = &quot;%PUBLIC_URL%/manifest.json&quot;&gt;</code></p> <h3 id="src-文件夹"><a href="#src-文件夹" class="header-anchor">#</a> src 文件夹</h3> <p>当前项目所有的源代码，整个程序的入口在 index.js 中。</p> <p><code>import React from 'react'</code> 表示引入 react 模块儿<br> <code>import './index.css'</code> 表示引入这个 css 文件嵌入到 js 中<br> <code>import App from './App'</code> 表示引入当前目录下的 App.js 文件<br> <code>import logo from './logo.svg'</code> 表示引入一个图片格式的文件<br> <code>import registerServiceWorker from './registerServiceWorker'</code> 表示注册一个<code>ServiceWorker</code></p> <p><code>import registerServiceWorker from './registerServiceWorker'</code>，表示引入一个<code>registerServiceWorker.js</code>文件，这是一个 <code>PWA</code> 文件 表示写网页就像写一个手机 app 一样。<br>
是<code>渐进式</code>web 应用的标准，把这个网页放到一台 https 协议的服务器上，用户首次访问这个网页需要联网，如果突然间这个网页断网了，第二次也依然可以访问这个网页，因为<code>registerServiceWorker</code>将网页<code>存储</code>到<code>本地</code>了。</p> <p>App.test.js 文件：这是一个自动化的测试文件。</p></div></div> <div class="page-edit"><!----> <div class="tags"><a href="/tags/?tag=react" title="标签">#react</a></div> <div class="last-updated"><span class="prefix">上次更新时间:</span> <span class="time">10年18月2023日 01时57分53秒</span></div></div> <div class="page-nav-wapper"><div class="page-nav-centre-wrap"><a href="/pages/2331001041/" class="page-nav-centre page-nav-centre-prev"><div class="tooltip">vue父子组件生命周期顺序</div></a> <a href="/pages/78144320432/" class="page-nav-centre page-nav-centre-next"><div class="tooltip">React16_4整理-TodoList</div></a></div> <div class="page-nav"><p class="inner"><span class="prev">
        ←
        <a href="/pages/2331001041/" class="prev">vue父子组件生命周期顺序</a></span> <span class="next"><a href="/pages/78144320432/"> React16_4整理-TodoList </a>
        →
      </span></p></div></div></div> <div class="article-list"><div class="article-title"><a href="/archives/" class="iconfont icon-bi">最近更新</a></div> <div class="article-wrapper"><dl><dd>01</dd> <dt><a href="/pages/45343271027/"><div>01.数据结构导论一览.md</div></a> <span>10-16</span></dt></dl><dl><dd>02</dd> <dt><a href="/pages/38850370637/"><div>30.2023年06月04日.md</div></a> <span>06-04</span></dt></dl><dl><dd>03</dd> <dt><a href="/pages/74707370537/"><div>08.与测量相关.md</div></a> <span>05-06</span></dt></dl> <dl><dd></dd> <dt><a href="/archives/" class="more">更多文章&gt;</a></dt></dl></div></div> </main></div> <div class="footer"><!----> 
  Theme by
  <a href="https://github.com/xugaoyi/vuepress-theme-vdoing" target="_blank" title="本站主题">Vdoing</a> 
    | Copyright © 2017-2023
    <span class="link">aiyoudiao 码二</span> <span>备案号：</span> <a href="https://beian.miit.gov.cn/#/Integrated/index" target="_blank" title="备案号">鄂ICP备2022002654号-1</a></div> <div class="buttons"><div title="返回顶部" class="button blur go-to-top iconfont icon-fanhuidingbu" style="display:none;"></div> <div title="去评论" class="button blur go-to-comment iconfont icon-pinglun" style="display:none;"></div></div> <!----> <!----> <!----></div><div class="global-ui"><div></div><APlayer audio="" fixed="true" theme="#b7daff" loop="loop" order="list" preload="auto" volume="0.7" mutex="true" lrc-type="3" list-max-height="250" storage-name="vuepress-plugin-meting" id="aplayer-fixed"></APlayer><div id="VuepressPluginLive2d"></div></div></div>
    <script src="/assets/js/app.bd2fbc77.js" defer></script><script src="/assets/js/3.72c9c947.js" defer></script><script src="/assets/js/110.0b0ee5b4.js" defer></script><script src="/assets/js/42.4251ca36.js" defer></script>
  </body>
</html>
